FOCSTOL Countersink Drill Bit Set - Countersink Chamfer Deburring Tool Set with Quick Change Hex Shank for Stainless Steel Copper Wood Plastic 5pcs (1

FOCSTOL Countersink Drill Bit Set - Countersink Chamfer Deburring Tool Set with Quick Change Hex Shank for Stainless Steel Copper Wood Plastic 5pcs (1

Package Include-----Total 5pcs/set: diameter 1/4 inch, 3/8 inch, 1/2 inch, 5/8 inch, 3/4 inch (6.3/9.5/12.7/15.8/19mm); total length 38/42/44/46/48mm; blade length 10/18/20/21/23.5mm; quick change hex shank; shank diameter 6.35mm Application-----Drilling (countersinking) and chamfering of surfaces of stainless steel (1MM thickness and below), copper, aluminum and other metals, wood and plastics (slower drilling speed is recommended for stainless steel). Continuous cutting is recommended to use cutting oil or water cooling can greatly extend the service life Functions 2 in 1-----Drilling (countersinking) and chamfering in one step, saving processing steps and processing time. Comprehensive specifications, a variety of sizes, to meet the customer's processing needs of a variety of materials and different diameters Five-edged Design and High Quality Material-----Fast chip removal and heat dissipation. M35 high speed steel material, high hardness, high sharpness, high wear resistance, extended service life. Surface plating titanium aluminum nitride treatment, anti-corrosion Recommended Machine-----Corded Drill, Cordless Drill, Benchtop Drill. Use electric hand drill: Recommended speed not less than 2000RPM; Faster the RPM, longer the drill bit's working life. When use Angle Grinder, please install angle grinder drill chuck